Development and productivity of maize in response to spatial arrangement under semiarid condition of Northeastern Brazil

Mendes, Wanderson de Sousa; Drews, Tiago Augusto; Medeiros, João Carlos; Rosa, Jaqueline Dalla; Gualberto, Adriano Veniciús Santana; Mielezrski, Fábio

doi:10.21475/ajcs.17.11.03.pne389

Cited by 6 publications

(6 citation statements)

References 18 publications

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“…The results of our study are in agreement with those of previous and recent research (Chauhan & Johnson, 2011;Johnson & Hoverstad, 2002;Mhlanga, Chauhan, & Thierfelder, 2016;Mohammadi, Ghobadi, & Shaekheh-Poor, 2012). The effectiveness of maize arrangement was tested by Mendes, Drews, Medeiros, Rosa, Gualberto, and Mielezrski (2017) . Statistically, the interaction of both parameters had more impact on weed control rather than only row spacing or the plant density factor.…”

Section: Discussionmentioning

confidence: 99%

Phytosociology and Behavior of Weeds in Maize as Influenced by Spatial Arrangements

Mendes¹,

Filho²,

Pereira³

et al. 2018

JAS

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Using the right spatial arrangement is a sustainable way to prevent or at least delay the emergence of weeds in the crop production. This study evaluated the influence of row spacing and plant density of maize on weed control based on the phytosociological survey. It was conducted on an Oxisol textured medium in a 400 m 2 area under semiarid conditions. The hybrid maize 30F53YH was managed under a no-till cropping system with three types of row spacing ( , and 8.0 plants m -2 ). The experimental design was randomized complete blocks with four replications in a factorial arrangement 3 × 3. The phytosociological survey of the weeds was randomly performed four times in each subplot, using the inventory square (0.5 m × 0.5 m). The collected data were analyzed using the R statistical program. Among the specimen's families identified on the field, three of them need to be highlighted due to its high values of density, frequency, and dominance. These families were Fabaceae, Poaceae, and Amaranthaceae. Also, it was identified that the Leucaena leucocephala species may be classified as a weed, as it acted as an invasive species on maize. The weed control was greatly influenced by the interaction of both parameters rather than only row spacing or the plant density factor. The results showed that the reduced spacing and high crop population decreased the presence of weeds in the maize crop.

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Section: Discussionmentioning

confidence: 99%

Phytosociology and Behavior of Weeds in Maize as Influenced by Spatial Arrangements

Mendes¹,

Filho²,

Pereira³

et al. 2018

JAS

Self Cite

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“…In the South-Center and Southeast region of Brazil, corn production is concentrated in the second growing season, from February to June [11]. During this season, water limitations caused by heavy rainfall variations can drastically reduce grain yield, implying the importance of using drought-tolerant maize genotypes [11,12]. These effects are influenced by sensitivity levels of the genotypes, stress intensity and duration and the plant development stage during drought stress [9].…”

Section: Introductionmentioning

confidence: 99%

Can Genetic Progress for Drought Tolerance in Popcorn Be Achieved by Indirect Selection?

et al. 2019

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The objective of this study was to estimate the direct and indirect effects of agricultural, morphological, physiological, and root traits of popcorn lines, under two conditions of water supply: full irrigation (FI) and drought stress (DS). A complete randomized block design with three replications was used to evaluate the following traits: expanded popcorn volume per hectare (EPV), 100-grain weight (100GW), mean ear length, mean ear diameter, number of grains per row (NGR), prolificacy (PRO), anthesis to silking interval, tassel length, number of tassel branches, plant height, shoot dry matter, green index (SPAD), and canopy temperature depression (CTD), root angle (RA), tap root volume (TRV), and crown root volume (CRV). Analyses of variance and path analysis, and subsequent partitioning of direct and indirect effects were performed. For the traits EPV, PRO, CTD, RA, CRV and TRV, the genotype x environment interaction was significant. Drought stress had significant effects on EPV (−7.15%), 100GW (−23.52%), SPAD (−29.31%), CTD (87.15%), RA (24.54%), and CRV (44.89%). The traits NGR and SPAD were found to be decisive for the expression of EPV. The exploitation of these traits by indirect selection is expected to induce increments in EPV in environments under DS and FI.

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“…Scientific studies assign GY reduction, under drought conditions, to a smaller number of grains yielded per area [19]. The water stress in the soil, throughout anthesis phase, critical period for the crop [38,39], affects the viability of the pollen grain, stigma receptivity, and fertilization [40], resulting in a lower number of grains yielded. In this study, the reduction in GY is explained by the decrease in HG.…”

Section: Discussionmentioning

confidence: 99%

Screening of Popcorn Genotypes for Drought Tolerance Using Canonical Correlations

et al. 2020

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Getting around the damage caused by drought is a worldwide challenge, particularly in Brazil, given that economy is based on agricultural activities, including popcorn growing. The purpose of this study was to evaluate popcorn inbred lines under water stressed (WS) and well-watered (WW) conditions regarding agronomic attributes, root morphology, and leaf “greenness” index (SPAD index), besides investigating the viability of indirect selection by canonical correlations (CC) of grain yield (GY) and popping expansion (PE). Seven agronomic, six morphological root traits were evaluated and SPAD index at five different dates during grain filling. The WS (−29% less water than WW) affected significantly the GY (−55%), PE (−28%), increased the brace and crown root density, and more vertically oriented the brace and crown angles. Higher SPAD index is associated with a higher yield, and these measures were the only ones with no significant genotype × water condition interaction, which may render concomitant selection for WS and WW easier. For associating the corrections of the different traits, CC proved to have better potential than simple correlations. Thus, the evaluation of SPAD index at 29 days after the anthesis showed the best CC, and based on the previous results of SPAD index, may be used regardless of the water condition.

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Development and productivity of maize in response to spatial arrangement under semiarid condition of Northeastern Brazil

Cited by 6 publications

References 18 publications

Phytosociology and Behavior of Weeds in Maize as Influenced by Spatial Arrangements

Phytosociology and Behavior of Weeds in Maize as Influenced by Spatial Arrangements

Can Genetic Progress for Drought Tolerance in Popcorn Be Achieved by Indirect Selection?

Screening of Popcorn Genotypes for Drought Tolerance Using Canonical Correlations

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